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| All Patents in class 123/74C | |||||
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| Picture | Number | Date | Patentee | Title | |
| 276,747 | May 01, 1883 | C.W. Baldwin | Gas Engine | ||
| 276,749 | May 01, 1883 | C.W. Baldwin | Gas Engine | ||
| 279,657 | Jun. 19, 1883 | H.S. Maxim | Gas Engine | ||
 | 289,693 | Dec. 04, 1883 | L.H. Nash | Gas Engine | |
| 296,340 | Apr. 08, 1884 | H.S. Maxim | Gas Engine | ||
 | 322,477 | Jul. 21, 1885 | J.F. Place | Gas Engine | |
| 343,744 | Jun. 15, 1886 | S. Wilcox | Gas Engine | ||
 | 383,775 | May 29, 1888 | C. Sintz | Gas Engine | |
| 406,160 | Jul. 02, 1889 | E. Captaine | Gas Motor | ||
| 514,211 | Feb. 06, 1894 | B.H. Coffey | Gas Engine | ||